We Are Ophthalmology LTD We Care About Your Health

Over the years, Ophthalmology LTD's name has become associated with the highest quality of comprehensive medical and surgical eye care. Highly trained ophthalmologists David West, Bryan Hammer, Gregory Osmundson, Eric Thomas, Dustin Dierks, Ryan Geraets, Michael Eide, Elizabeth Atchison, and Elise In’t Veld, as well as experienced optometrists Andrea McCann and Emily Walters combine their considerable expertise to give each and every patient the best possible care. Ophthalmology LTD delivers treatment for cataracts, glaucoma, diabetic eye disease, as well as cornea transplants, oculoplastic surgery, retina surgery, vitreoretinal surgery, and pediatric eye care in Sioux Falls.

The Finest Eye Specialists in the Tri-State Area

Ophthalmology LTD brings the finest eye specialists in South Dakota to satellite offices in the tri-state area: Luverne, Pipestone, Worthington and Windom in Minnesota, Rock Valley, Sibley, and Sioux Center in Iowa, as well as Dell Rapids, Madison, Mitchell, and Yankton in South Dakota.


In 1968, Ophthalmology LTD revolutionized eye care by taking a comprehensive approach, bringing patients a full range of vision specialties under one roof. Today, eye care teams across the nation are now mimicking the strategy we have spent more than 50 years perfecting. It is because of this experience and our genuine dedication to our patients that our team is widely considered the finest, most comprehensive group of sub-specialty eye surgeons in the tri-state Siouxland area.

Our Services

Our ophthalmologists have expertise in a wide range of specialties and work as a team to meet your eye care needs.


Not only is cataract treatment the most frequently performed surgery in the United States, it is also one of the most successful. More than 99% of patients who undergo cataract removal rank their vision as significantly improved. Drs. Osmundson, Hammer, Dierks, Eide, In't Veld, and West perform this highly effective procedure.

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Early detection and treatment is the key to preventing vision loss with Glaucoma. More than three million Americans have glaucoma, but only half are actually aware that this "silent thief" is slowly and without warning stealing away their vision, sometimes without any noticeable symptoms. Drs. Osmundson and In't Veld  at Ophthalmology LTD specializes in the diagnosis and treatment of glaucoma.

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Children should have a yearly comprehensive eye exam along with their parents. Many vision problems can be detected early and treated before they become detrimental to a child's development, learning abilities, and every day function. Dr. West of Ophthalmology LTD has 22 years of experience in the evaluation and treatment of children's vision.

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The retina functions much like the film in a camera, and when film is damaged, so is the picture. Our retinal specialists Drs. Geraets, Thomas, and Atchison  offer comprehensive retinal exams and treatment to protect against diseases such as diabetic retinopathy that can damage your retina and vision.

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If a window pane is distorted or marred by imperfections, it is difficult to see out through it clearly. Your cornea is your eye’s window. To keep it clear or to restore it to its proper state, Dr. Eide of Ophthalmology LTD uses his specialty training in corneal diseases to treat dry eye, keratoconus, and other conditions that can cause corneal imperfections.

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When your eyelids, eye sockets, or tear ducts malfunction, or a tumor threatens your vision, Ophthalmology LTD oculoplastic surgeon Dr. Hammer can help. Specializing in procedures that restore clear vision as well as a more youthful appearance, Dr. Hammer treats and manages a wide variety of ocular conditions.

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We are a team of passionate professionals with
caring for patients in South Dakota, Minnesota, & Iowa.

Have a look around, then call, request an appointment online, or come by to learn more about how our team of eye experts can help you and your family.

  • Cheryl B.

    Very friendly, caring staff. Highly recommend. Have been able to get in quickly if there is a concern.

  • Judy S.

    Everyone is so kind and thoughtful. They address the problem and fix it as best it can be fixed. All the while making me feel very important to them.

  • Marjory P.

    Very polite and so helpful haven’t had a problem with anyone their

  • Jeryl L.

    The doctors are second to none. Staff members are kind and courteous. Reception is welcoming and above and beyond in accommodating the needs of the patients.

  • Marlyce B.

    They were very helpful in examining my eyes and finding nothing wrong with them. Would recommend them to all.

  • Dennis O.

    Very prompt and informative. No issues whatsoever.

  • Patti L.

    Very professional and answer all questions would highly recommend the Doctors

  • Dianne G.

    Very personal care, well trained personnel that are friendly and caring

  • Jennifer H.

    Fast, friendly, efficient and able to explain procedures in easy to understand words.

  • Morris B.

    Taking care of my problem in a speedy manner.

  • Derek T.

    The people were great as well as nice!

  • Brandon R.

    Recently had a procedure done. The care that is provided by his staff and Dr. Thomas is top notch.

  • Nelva P.

    Iwas very pleased with my experience. Every one was on time and very happy and helpful 😃

  • Dale M.

    Very prompt and professional

  • Deb V.

    They are very efficient/ quick at getting you going. I arrived an hour early, thought I’d sit in the waiting room for that time, but got in about 5 minutes after checking in.

  • Judy S.

    The staff is always professional and yet friendly at the same time. Dr. Atchison makes me confident I’m in good hands.

  • Carol S.

    Great staff and amazing treatment I highly recommend going here

  • Louise B.

    It was a very good experience. Kind and considerate and everything was on time.

  • Duane M.


  • Darren P.

    I went in with a detached retina and not knowing exactly how serious it could be. The staff was very caring and comforting and making me feel at ease. Everything went very well and I am recovering nicely. Thank you... read more

  • Betty H.

    Dr Achison gave me shots in my eyes. She explained everything in detail and was very careful with me. I didnt have any problems at all afterwards.

  • Brian S.

    I have a long history with my retina’s and Ophthalmology Limited is always very accommodating and get me in when I have issues. Staff is always very friendly and helpful and Dr. Thomas is a true professional!

  • Earl B.

    From the first time I walked into the building until I left I was treated with respect. Very professional staff and doctor.

  • Molly M.

    Enjoyed my check up and conversation with Dr Emily Walters- professional, informative!

  • ELLEN H.

    Very courteous and professional service. I arrived in the lobby for my appointment and the entire process of The eye test and a consultation flowed quite smoothly From start to finish.

  • Brenda B.

    My husband and I have been patients at Ophthalmology LTD. for years. We would not go anywhere else. The staff is so friendly, the nurses are great and the doctors are very knowledgeable and caring.

  • Amy K.

    The entire experience was great. And staff and doctor were so kind.

  • Gene K.

    Great care friendly staff

  • Barb B.

    I have glaucoma and have been working with Dr. Osmondson for years now! Our sight is precious and I trust him with helping me keep mine as long as possible. I have had several surgeries at the center and the... read more

  • Gail K.

    Great service. Kind people

  • Jane B.

    very nice and.caring staff.

  • Cindy C.

    Extremely thorough exam with great explanations.

  • Pat L.

    Fast and efficient and excellent staff and care

  • Kathryn T.

    I am so happy that I live where I can go to Opthalmology LTD for my eye exams. I truly appreciate all the help I have gotten with my eye problems. Everyone there is so pleasant and helpful.

  • Thomas H.

    Have had nothing but good service here. Everyone is friendly and polite. Very good experience.

  • Roger S.

    I was able to get in immediately to have a lazer treatment for glaucoma. Immediately after the treatment the pain was gone and I was able to see again. They even stayed a bit late to get everything finished. Thank... read more

  • Ruth H.

    The staff was efficient and helpful and my doctor (Dr. Dierks) was awesome!!

  • Diane S.

    I am so impressed with the care they give me at Ophthalmology LTD. Very caring staff. Thank You Dr Geraets & Dr Dierks for the amazing care I got.

  • Tricia V.

    I received excellent care. Dr. Atchison and her staff were professional, caring and did a wonderful job explaining the details of my eye surgery. Everything went well, praise God. I highly recommend them!

  • Susan P.

    Everyone was kind and caring and very helpful Thank You for the great care

  • Craig K.

    Great experience! Definitely recommend.

  • Sandi H.

    My appointment was on time, the staff are friendly, knowledgeable and professional. I actually enjoyed my visit. I highly recommend Dr. Atchison

  • Mabel O.

    Have been a customer for many years. I have been very satisfied. They have always given me excellent care. Would recommend highly.

  • Iris H.

    Very professional knowledgeable understanding. I love Dr. West and have been his patient for many years. I would recommend Ophthalmology LTD to anyone.

  • Jay J.

    Dr. Garrett's is a very professional and knowledgeable person along with his staff. even with all the patients he has he still treats you as his only patient when you see him. you don't see that in to many specialist.... read more

  • Bobby C.

    Very knowledgeable and professional.

  • Pat O.

    the doctor has done an awesome job with my macular degeneration

  • Judy K.

    They are friendly and efficient. Especially like Noctor Thomas as he is knowledgeable remembers my case and he’s real concerned about my eyesight. I feel blessed that there is a place in South Dakota when I am with my mom... read more

  • Lowell M.

    Dr. Hammer and his team were very efficient and caring. They took ample time to answer our every question.

  • Beth W.

    Everyone at Ophthalmology LTD sees you as a person, not a number. (No pun, intended!)